6Li-40K dual-species MOT

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Table of contents

1 Introduction 
1.1 Quantum degenerate Fermi gases
1.2 Mixtures of Fermi gases
1.3 Heteronuclear Fermi-Fermi molecules
1.4 Outline of this thesis
2 Construction of the experimental apparatus 
2.1 Design considerations
2.2 Vacuum manifold
2.2.1 Setup
2.2.2 Assembly, pump down and bake out
2.3 Laser systems
2.3.1 Optics
2.3.2 Diode lasers
2.3.3 Saturated absorption spectroscopy
2.3.4 Tapered amplifiers
2.4 6Li Zeeman slower
2.4.1 Principle of Zeeman-tuned slowing
2.4.2 Oven
2.4.3 Coil assembly
2.4.4 Optics
2.5 40K 2D-MOT
2.5.1 Principle of a 2D-MOT
2.5.2 Experimental setup
2.6 6Li-40K dual-species MOT
2.6.1 Principle of a MOT
2.6.2 Experimental setup
2.7 Magnetic trapping
2.7.1 Principle of magnetic trapping
2.7.2 Transfer from the MOT to the magnetic quadrupole trap
2.7.3 Magnetic transport
2.7.4 Magnetic quadrupole trap of the final cell
2.7.5 Optical plug
2.7.6 Evaporative cooling
2.8 Diagnostic tools
2.8.1 Principle of absorption imaging
2.8.2 Evaluation of absorption images
2.8.3 Optical setup
2.8.4 Practical aspects
2.8.5 Auxiliary detection systems
2.8.6 Experiment control and data acquisition
2.9 Conclusion and outlook
3 Characterization of the experimental apparatus 
3.1 6Li Zeeman slower
3.2 40K 2D-MOT
3.3 6Li-40K dual-species MOT
3.3.1 Single-species MOTs
3.3.2 Heteronuclear Collisions in the dual-species MOT
3.4 Transfer of the atoms into the magnetic trap
3.5 Magnetic quadrupole trap
3.6 Magnetic transport
3.7 Conclusion
4 Photoassociation of heteronuclear 6Li40K molecules 
4.1 Introduction
4.1.1 Principle of photoassociation
4.1.2 Applications of ultracold photoassociation
4.1.3 Photoassociation of LiK∗ compared to other dimers
4.1.4 Detection techniques for photoassociation
4.1.5 Molecular potentials
4.1.6 Selection rules
4.1.7 Rotational barriers for ultracold ground-state collisions
4.1.8 The LeRoy-Bernstein formula
4.1.9 Previous work on LiK
4.2 Experimental results
4.2.1 Experimental setup
4.2.2 Optimization of the photoassociation signal
4.2.3 Photoassociation spectroscopy of 40K∗2 molecules
4.2.4 Photoassociation spectroscopy of 6Li40K∗ molecules
4.3 Conclusion
5 Particle motion in rapidly oscillating potentials 
5.1 Introduction
5.2 Classical motion in a rapidly oscillating potential
5.2.1 Time-independent description
5.2.2 Coupling between the mean motion and the potential’s phase .
5.2.3 The effect of a phase hop
5.3 Quantum motion in a rapidly oscillating potential
5.3.1 Time-independent description
5.3.2 The effect of a phase hop
5.3.3 Numerical simulations
5.4 Consistency between classical and quantum mechanical results
5.4.1 Coherent states
5.4.2 Effect of phase hop on a coherent mean-motion state
5.5 Conclusion
6 Conclusion 
A Determination of vapor pressure by light absorption 
B Saturation spectroscopy of the violet 4S1/2 → 5P3/2 transition of K 
C Engineering drawings 
C.1 Octagonal cell
C.2 Science cell
C.3 Tapered amplifier support for potassium
C.4 Tapered amplifier support for lithium
C.5 2D-MOT vacuum parts
D Publications